Improved power-press



E. W. BLISS.

PQWBR PRESS.

No- 'l0-M632H Patented July 26, 1870.!

To all whom it may concern:

,nuto-dslam e aan anni.

iELIPH'ALET'W. Buss-for BROOKLYN, NEW -YonmAssIeN'on To Marsv f Blass,` e co.; or SAME PLAGE;

Lettes Patent No. '105,6372, dated July 26, 1870.

IMPRovnD POWER-PRESS.

Be it known that I, ELIPHALET W. Bmss, of Brooklyn, in the countyof Kings and State of New York, haveV invented a new and useful Improvement in Power-Presses, of which thefollowing is a full, clear, and exact description, reference being had to the accompanyingdrawing forming part of this specifica tion, and in which- Figure 1 represents a'front elevation of a powerpres constructedv in accordance with my improvemen Figure 2, a central sectional elevation at right angles to iig. l; and r Figure 3, a front view f the upper portion of the press in part, illustrating he trip-motion in a different positionto thatshown in g.

Similar letters of' reference indicate corresponding parts. l In the improved power-press which is the subject `of this invention, andwhich, as here represented, is

a die-press, suitable for making stamped articles, like -fruit-can 'tops and bottoms, and other metal work, the bed portion which carries the xed die ordies is set to occupy an inclined position, sloping downward from the front toward theback, and the plunger also 4set inclined to 1ie`at right angles 4to the bed, whereby the usual striking off is dispensed with by the au, i tomatic removal of the finished work in rear of the bed.

Furthermore, a trip-motion of `novel character or construction is applied to the press for arresting the plunger atthe top of itsstroke, when out of the way in respect to the lower die, and keeping it arrested insuch raisedposition without stopping the ruiming wheel or pulley' that drives the operating shaft of th press.

Referring to the accompanying drawing'-` A is the 4bed portion that carries the fixed die, and which is arranged to occupy an vinclined position, preferably-of about forty-'five degrees, ,sloping downward in a backwardly direct-ion.

B is the main frame, and

C, the plunger, carrying the moving die, and which is also set inclined,` to lie at'rght angles to the bed. l Said plunger is represented as actuated, through a connecting-rod, D, by an eccentric, E, on the hori' zontal'driving-shait' F, at the npper end of the main frame. The inclination ofthe bed A, carrying the xed die or dies, allows? the finished articles to'slideV oft' A without involving the trouble, on thc part of the operator, of striking them olf.

Motion is communicated to the driving-shaft F byl a pulle'y, G, a-sliding clutch, H, onsaid shaft being made to gear therewith.

vTo stop the plunger by the sliding of the clutch, which dispenses with arresting the. motion of the driving-pulley, it is requisite,.in the practical operation ol' the press, that the plunger should be stopped when at its highest point, which gives the necessary room for clearing or taking out and changing the dies.

To effect this, the following means that dispenses with a spring or springs for the purpose, other than one applied to the clutch-shifting t-readle, and which may be supplanted by a weight, are employed.

On the driving-shaft F is secured a cam, I,.that serves, when the plunger is at its highest position, to lift a vertically sliding or rising and falling stop, J, to the clutch', said stop operating, when down, to keep t 'the clutch H in gear withI the pulley G, or prevent it from being slid out of gear therewith, but when raised it permits of the clutch sliding'out of gear with the pulley.

Said lclutch H is forced or held-in gear with the driving-pulley G, to keep'the press running, by pressing on or against atreadle, K, connected by a rod, L, with the cluch,

0n taking oi, however, pressure from the treadle, a spring, M, serves to actuate the latter and move the clutch to throw it ont of gear with the drivingpulley G, so soon as the cam I, in coming round, lifts the stop J, to permit of the clutch H sliding under it, which, by the set of the cam I, is,when the plunger is at its highest point, and the stop J thus raised, kept elevated by riding on the clutch, the plunger remaining stationary in its highest position. On again working the treadle to-t-hrow the clutch into.

gear with the driving-pulley, the stop J falls, to op- Letters Patent, is-I The combination of the rising and falling stop J,

vthe cam I, on the driving-shaft F, the pulleyG, the

clutch H, and treadle and lever operating the same,

with the' plunger C of the press, essentially as and for the purpose herein set forth. Y Witnesses:` ELIPHALET W. BLISS.

FRED. HAYNES, HENRY PALMER. 

